Ireneusz Andrzej Grządzielski, Mikołaj Zakrzewski, Volodymyr Konoval. Simulation Tests of the Power System Defence Process at a Decrease in Frequency – Implementation of the NC ER/2017 Code Recommendations. AE [Internet]. 2019 Dec. 31 [cited 2025 Sep. 17];(04):54-61. Available from: https://actaenergetica.org/index.php/journal/article/view/78